We Isolate Nine Different Mutants Unable to Make Histidine

question 8

Multiple Choice

We isolate nine different mutants unable to make histidine.They map in different locations and by genetic means we can show there are nine different genes in the pathway.How many enzymes can we anticipate finding in this pathway?

• A)1
• B)3
• C)6
• D)9
• E)12

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